1. To debase by making something less refined and coarse, or lower in quality: Such awful language and behavior vulgarizes our way of living and shouldn't be allowed.
2. To present something in a way that makes it more accessible to ordinary people: The coffee shop catered to the taste of all of its customers and vulgaried the various kinds of coffee from a cup of normal coffee to caramel, hazelnut, and vanilla flavors at a very reasonable price.
3. To translate a written work from a classical language into the vernacular or ordinary speech rather than formal writing: The works of Shakespeare were vulgarized for the students into the present day vernacular.